Badiant



July 21, 1925.

v. RISINGER RADIANT 7 Original Filed Sep 1922 izvm wafi FRANK V. RISINGEB,

Rissued J uly 2.1, 1925.

I p Re. 16,122 ATENT OFFICE.

OF LAKEWOOD, OHIO.

RADIANT.

Original No. 1,486,036, dated March 4, 1924, Serial No. 587,172, filed. September 9,1922. Application for reissue filed February 26, 1925.

To all whom itonaly concern."

Be 'it known that I, FRANK V. RISINGER, a citizen of the United States, and a resident of Lakewood, in the county of Cuyahoga and State of Ohio, have invented new and Improved Radiants, of which the following is a full,clear, and exact description.

This invention relates to improvements in radiants and more particularly to a heating element for use in gas stoves, which is known on the market as a radiant anjobject of the invention being to provide a radiant which tively narrow in depth, whereby a greater areaof'radiating surface and minimum obstruction to the flame is had, and also a larger number of radiating points may be provided and brought incontact with the flame, thus effecting greater heat radiation than is possible with radiants heretofore known.

A further object is to provide a radiant of the character stated, which while presenting the maximum radiating surface requires but a minimum of fuel, thus resulting in economy and greater efficiency in a given space. V I

A further object is to provide a radiant which insures the entire surface of the radiant becoming brilliantly and evenly heated, the upper portionbeing as equally radiant as the bottom, this being due in part to the fact that the openings in the front of the radiant are largest at the lower portion of the radiantand decrease in size-to the upper end of. the radiant, therebytending to offer less outlet as the flame moves upwardly and provide sufficient inclosure to insure a brilliant radiation throughout.

, A further object is to provide a radiant which functions to throw the heat forward, and which dispenses with the necessity for the ordinary clay backing, and which facilitates theassemblage of any desired number of radiants side by side to give the desired heating surface.

A further object is to provide improved means for constructing and assembling the radiants in a stove.

A further object is to provide a radiant with improved construction and arrangement of back and radiating points, which not only facilitates the formation of the perfect radiant vwith the desired number of is relativelybroad, and rela- I ers',

Serial No. 11,894.

points, but also provides stronger and better radiating points, and gives superior re-' sults to-radiants as heretofore made.

Tith these and other objects in view, the invention consists in certain novel features of construction and combinations, and arrangements of parts, as will be more fully hereinafter described and pointed out. in the claims.

In the accompanying drawings- Figure 1 is a view partly in section of a stove showing my improved radiants in elevation therein.

Figure 2 is a view mainly in front elevation of my improved radiant partly broken away.

Figure 3 is a View. in longitudinal section through the radiant and its backing plate, the section being taken on the line 3-3 of Figure 1.

Figure 4 is a view in rear elevation of my'improved radiant.

Figure 5 is a view in transverse section on the line 5-5 of Figure 3.

Figure 6 is a fragmentary view in transverse section of the radiant looking forwardly at the rear of the front portion of T the radiant.

Figure 7 is an exaggerated view in transverse section illustrating one of the radiating points 'and' a portion of the back plate.

Figure 8 is a view in section on the line 88 of Figure 7.

1 represents a stove which may be of any desired shape and size, and which consti-.

tutes a gas burner or heater, and which is provided with a series of any desired number of my improvedradiants 2. p

v, The radiants 2 are hollow and have parallel side walls 33 so that theradiant'is of uniform width throughout its height and is appreciably wider than ordinary radiants in general use. lower end. for the admission of the flame from any desired arrangement ofgas burnand is closed at its upper end. The back wall 4 of the radiant extends above the top of the radiant forming a flange 5 which projects the entire width of the ra' diant and is adapted to receive an overhang ing lip 6 on a back plate 7, to hold the radiants in proper vertical position.

The radiant is open at its The back of the radiant is flush with the plate 7 throughout the edges of the radiant,

recessed and provided with longitudinal and transverse corrugations or ribs 8 and 9, whereby dead air spaces are formed be- -tween the back wall of the radiant and the plate 7 to act as heat insulators and obviate the necessity of providing the ordinary clay backing in the stove.

Furthermore, this arrangement and construction facilitates the assemblage of the radiants and reduces the cost of manufacture and the expense of operation and reair.

p The back wall 4 of the radiant is vertical while the front wall 10 of the radiant inclines rearwardly from its lower to its upper end, thus reducing the cross sectional area from-the lower to the upper end of the radiant. This front 10 of the radiant is formed with any desired design or configuration of openings 11 and it wil be noted that these openings 11 are. largest at the lower portion of the radiant and gradually diminish in size from the lower to the upper portion of the radiant, thus serving to gradually decrease the outlets from the lower to the upper portion, and insure a full rad1ation throughout the length of the radlant.

radiant from the bottom toward the top thereof are carefully and accurately 'proportioned or graduated 'to gradually offer less outlet to the flame as it moves upwardly so that a balance is obtained and the heating from top to bottom and the top will be just as bright as the bottom.

front and rear walls 10 and 4 thereof, I provide a large number of radiating polnts 12, one of these points being shown enlarged the shape of the point which is sharp and tapering, and which is provided with in tegral webs 13 at opposite sides of its base, which are disposed at an angle to the .point, and also at an angle to the supporting front or back as the case may be, whereby the points can be readily formed in and withdrawn from the point forming openings of a suitable die member.

These webs are angular in transverse section and not only give strength and durability to the radiating point, but they, by reason of their shape and location, facilitate the molding or casting of the points. As will be apparent from an inspection of Figures 7 and 8 and the lower right hand cor ner of Figure 2, the radiating points 12 at the back of the radiant project from the vertical webs 8 so that the point-sare additionally reinforced and are arranged in longi tudinal rows with vertical channels between points are formed and by providing these spaces of the shape corresponding to the shape of the points and webs above described, the material of the radiant can be squeezed or forced laterally without carrying a film of the oil across the mouth of the point forming openings and thereby sepa rating the clay tered the opening from the mass of clay forming the body of the radiant by a film of oil, with the result that none of the points will be missing from the finished radiant.

The integral webs 13 at the base of the radiating points 12 not only'reinforce the points, but enable a radiant which is combecomes greater, because the clay must be forced laterally a greater distance to cover the die, so that with the ordinary small points it has not been found possible to make a wide radiant, although a wide radiant is preferable to a narrow radiant, because it offers less frictional resistance to the upward movement of the flame within the radiant. The webs 13 and vertical ribs8 from which the points project cause the radiating points to have a large and flared base so that the points have a firmer bond with the body of the radiant. Furthermore, the point forming openings in the die have enlarged and flared mouths and the lateral movement of the clay across the die when manufacturing the radiants carries it downwardly and upwardly through the flared mouths of the point forming openings instead of merely across the top of the small opening, with the result that the said movement of the clay does not result in separating the clay which has already entered a point forming opening from the mass .of the clay and a wide radiant can be manufactured with a full number of the radiating points.

With radiants such as heretofore made, it

is quite impossible to form all of the points eration, which is of greater width than.

radiants such as heretofore made, and which insures a full radiation throughout the entire height of the radiant.

In this construction large openings are having a straight rear wall provided with recesses on its outer face, and an inclined front wall provided with openings, the openings gradually decreasing in size from the bottom to the top, the front and rear walls being provided on their inner faces with radiating projections.

6. A radiant comprising a hollow body open at the bottom and having a straight rear wall provided on its outer face with tapering intersecting ribs forming a plurality of recesses, and an inclined front wall provided with openings, the said openings decreasing in size from the bottom to the top, the front and rear walls being provided on their inner faces with tapering projections. p

7 A radiant comprising an elongated front having arranged therein a series of formed at the bottom of the radiant to per-* openings extending throughout its length,

mit the greatest possible buoyancy to the flame passing upwardly within the radiant, and the graduated openings provide a means for proportionately reducing the outlet from the bottom to the top so that there will bean even distribution of heat within the radiant, thereby increasing the area and glow of the clay surface being heated. Without the graduated openings in the radiant the heat would pass to the top and only the top portion of the radiant would be heated sufficiently to glow. It is most essential for the graduated openings to be properly proportioned with exactness for otherwise it is not possible to obtain an even balance of the glow over the surface of the radiant.

Various slight changes may be made in the general form and arrangement of parts described, without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. A radiant having parallel closed sides, inclined perforated front and straight recessed back, whereby dead air spaces are formed at the back of the radiant.

2. A radiant of the character described, having openings in its front, dead air spaces in its back, and having internal radiating points on its front and back.

3. A radiant comprising a hollow body having openings in its front, and having longitudinal and transverse webs on its rear face forming dead air spaces. I

4. A radiant having a relatively wide closed back, a relatively wide perforated front, parallel closed sides connecting the back and front, internal radiating points on the front and the back, and angular inclined webs at opposite sides of the points and integral with the points and their supports.

5. A radiant comprising a hollow body.

said openings gradually decreasing in size from its bottom to its top, and the decrease in the size of the openings being properly proportioned to feed a gradually decreased amount of air to the interior as may be necessary to maintain a uniform combustion throughout the length of the radiant, and heat the radiant substantially uniformly from end to end.

8. A radiant comprising a vertically arranged front and having its lower end in communication with the fuel supply, the said front having arranged therein a plurality of openings which gradually decrease 'in size from the bottom of the radiant to the top thereof, said decrease in the size of the openings being properly proportioned to admit air in gradually decreased amounts from the bottom of the radiant to the top thereof as is required by the fuel to maintain uniform combustion throughout the length of the radiant and cause a substantially uniform heating of the radiant from end to end.

9. A radiant comprising an elongated hollow body having an air space formed in the back thereof and cut off from communication with the interior of the body to insulate the radiant from a backing member.

10. A radiant comprising a hollow body having interior radiating points, said points being integral with the body and having enlarged integral bases, the points and bases tapering toward theends of the points so that they can be readily withdrawn from a die.

11. A radiant comprising a hollow body having interior radiating points, saidpoints having base portions which are flared on opposite sides thereof to form reinforcing webs, the points and webs being integral with the body and tapering toward the ends thereof so that they can be readily withdrawn from a die.

12. A radiant comprising a hollow body having interior radiating'points, said points being flared at the base thereof to provide angular and inclined reinforcing webs, the points and webs being integral with the body and being tapered toward the ends thereof so that they can be readily withdrawn from a die. r

13. A radiant comprising a hollow body formed with a series of interior ribs and radiating points projecting from the said ribs.

14. A radiant comprising an elongated hollow body formed with a series of longitudinally'extending interior ribs providing channels extending longitudinally of the radiant, and longitudinally rows of radiating points projecting from the ribs}.

15. A radiant comprising an elongated body portion having an interior passage which tapers gradually toward the upper end thereof, said radiant being formed with a longitudinally extending series of openings in the front thereof and said openings being gradually and uniformly decreased in size from the bottom toward the top of the radiant, the taper in the size of the passage presenting less surface to be heated as the flame rises and the decrease in the size of the openings being properly proportioned to feed a gradually decreased amount of air to the interior of the radiant as is necessary tomaintain uniform combustion substantially throughout the length of the radiant and heat the radiant substantially from'end to end.

In testimony whereof I afiix my signature,

- FRANK V. RISINGER, 

